RunAwayEnemi

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class RunAwayEnemi : MonoBehaviour
{
    public int speedX = 0;
    public int speedY = 0;

    private float generalSpeed = 0.014f;

    private Animator animController = null;
    private Character character = null;  //character este personaje

    public GameObject Enemi = null;
    public Character EnemiCharacter = null;  //character del target

	// Use this for initialization
	void Start ()
    {
        animController = this.GetComponent<Animator>();
        character = this.GetComponent<Character>();

        Enemi = GameObject.Find("Principal");

        //target != null
        if (Enemi)
        {
            EnemiCharacter = Enemi.GetComponent<Character>();
        }
        else
        {
            Debug.LogError("Enemi is NULL");
        }

        generalSpeed += Random.Range(-0.004f, 0.004f);
    }

	// Update is called once per frame
    void Update()
    {
        //if (target != null && targetCharacter != null && character != null && character.GetIsAlive())
        if (Enemi && EnemiCharacter && character && character.GetIsAlive())
        {
            UpdateMovementDirectionByEnemi();
        }
        else
        {
            speedX = 0;
            speedY = 0;
        }

        UpdateAnimation();
        UpdatePosition();

    }

    void UpdateMovementDirectionByEnemi()
    {
        //Vivo
        if (EnemiCharacter.GetIsAlive())
        {
            Vector3 currentPos = this.transform.position;
            Vector3 EnemiPos = Enemi.transform.position;

            Vector3 deltaPos;

            deltaPos.x = EnemiPos.x - transform.position.x;
            deltaPos.y = EnemiPos.y - currentPos.y;

            float margin = generalSpeed * 2 + 0.2f;

            // Eje X
            if (deltaPos.x > margin)
            {
                speedX = 1;
            }
            else if (deltaPos.x < -margin)
            {
                speedX = -1;
            }
            else
            {
                speedX = 0;
            }

            // Eje Y
            if (deltaPos.y > margin)
            {
                speedY = 1;
            }
            else if (deltaPos.y < -margin)
            {
                speedY = -1;
            }
            else
            {
                speedY = 0;
            }
        }
        else
        {
            speedX = 0;
            speedY = 0;
        }

        private void UpdateAnimation()
        {
            if (animController)
            {
                animController.SetInteger("speedX", speedX);
                animController.SetInteger("speedY", speedY);
            }
            else
            {
                Debug.LogError("animController is NULL");
            }
        }

        private void UpdatePosition()
        {
            Vector2 currentSpeed;

            currentSpeed.x = speedX;
            currentSpeed.y = speedY;

            //Transformarlo en unitario
            currentSpeed.Normalize();

            //Le damos magnitud
            currentSpeed *= generalSpeed;

            //Hacemos el cambio de posición
            Vector3 currentPos = transform.position;

            currentPos.x += currentSpeed.x;
            currentPos.y += currentSpeed.y;

            transform.position = currentPos;
        }
    }
    }
}